Responses
But that's not what they were FEELING when he/she referred other as a siblings
If you have read till now you'll encounter several moments when both clearly stating that they must hide their feeling both fl and ml by calling him brother
So No blood related, No siblings feeling from both , Living apart quiet a time

Stop making a fuss. If they are the end game, so what? It’s not like they’re blood related. It’s not even a secret that she’s adopted. So why are we making this a big of a deal?